import axios from 'axios'
import { Notification, MessageBox, Message } from 'element-ui'
import store from '@/store'
import { getToken } from '@/utils/auth'
import errorCode from '@/utils/errorCode'



axios.defaults.headers['Content-Type'] = 'application/json;charset=utf-8'
// 创建axios实例
const service = axios.create({
  // axios中请求配置有baseURL选项，表示请求URL公共部分
  baseURL: process.env.VUE_APP_BASE_IP + process.env.VUE_APP_BASE_API,
  // 超时
  timeout: 50000,
})

// request拦截器
service.interceptors.request.use(
  (config) => {
    // 是否需要设置 token
    const isToken = (config.headers || {}).isToken === false
    if (getToken() && !isToken) {
      config.headers['Authorization'] = 'Bearer ' + getToken() // 让每个请求携带自定义token 请根据实际情况自行修改
    }
    return config
  },
  (error) => {
    // console.log(error)
    Promise.reject(error)
  }
)

// 响应拦截器
service.interceptors.response.use(res => {
  // let { code, success, msg } = res.data
  let code = res.data.code;
  let success = res.data.success;
  let msg = res.data.msg;

  // * 优先判断 success
  if (success) {
    return res.data
  } else {
    let expired = store.state.user.expired
    if (!expired) {
      if (code === 401) {
        store.dispatch('user/setExpired', true)

        MessageBox.confirm('登录状态已过期，您可以继续留在该页面，或者重新登录', '系统提示', {
          confirmButtonText: '重新登录',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(() => {
          store.dispatch('user/logout').then(() => {
            store.dispatch('user/setExpired', false)
            location.href = "/"
          })
        }).catch(() => {
          store.dispatch('user/setExpired', false)
        })
      } else {
        Message({
          message: msg || "后端接口异常",
          type: 'error',
          duration: 5 * 1000
        })
        return Promise.reject(error)
      }
    }

  }


},
  error => {
    // console.log('err' + error)
    let { message } = error;
    if (message == "Network Error") {
      message = "后端接口连接异常";
    }
    else if (message.includes("timeout")) {
      message = "系统接口请求超时";
    }
    else if (message.includes("Request failed with status code")) {
      message = "系统接口" + message.substr(message.length - 3) + "异常";
    }
    Message({
      message: message,
      type: 'error',
      duration: 5 * 1000
    })
    return Promise.reject(error)
  }
)

export default service
